1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "LocalFileSystem.h"
33
34#if ENABLE(FILE_SYSTEM)
35
36#include "AsyncFileSystem.h"
37#include "ErrorCallback.h"
38#include "FileSystemCallback.h"
39#include "FileSystemCallbacks.h"
40#include "PlatformString.h"
41#include "WebFileSystem.h"
42#include "WebFileSystemCallbacksImpl.h"
43#include "WebFrameClient.h"
44#include "WebFrameImpl.h"
45#include "WebWorkerImpl.h"
46#include "WorkerContext.h"
47#include "WorkerThread.h"
48#include <wtf/Threading.h>
49
50using namespace WebKit;
51
52namespace WebCore {
53
54LocalFileSystem& LocalFileSystem::localFileSystem()
55{
56    AtomicallyInitializedStatic(LocalFileSystem*, localFileSystem = new LocalFileSystem(""));
57    return *localFileSystem;
58}
59
60namespace {
61
62enum CreationFlag {
63    OpenExisting,
64    CreateIfNotPresent
65};
66
67} // namespace
68
69static void openFileSystemHelper(ScriptExecutionContext* context, AsyncFileSystem::Type type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool synchronous, long long size, CreationFlag create)
70{
71    ASSERT(context);
72    if (context->isDocument()) {
73        Document* document = static_cast<Document*>(context);
74        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
75        webFrame->client()->openFileSystem(webFrame, static_cast<WebFileSystem::Type>(type), size, create == CreateIfNotPresent, new WebFileSystemCallbacksImpl(callbacks, type));
76    } else {
77        WorkerContext* workerContext = static_cast<WorkerContext*>(context);
78        WorkerLoaderProxy* workerLoaderProxy = &workerContext->thread()->workerLoaderProxy();
79        WebWorkerBase* webWorker = static_cast<WebWorkerBase*>(workerLoaderProxy);
80        webWorker->openFileSystemForWorker(static_cast<WebFileSystem::Type>(type), size, create == CreateIfNotPresent, new WebFileSystemCallbacksImpl(callbacks, type, context, synchronous), synchronous);
81    }
82}
83
84void LocalFileSystem::readFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool synchronous)
85{
86    openFileSystemHelper(context, type, callbacks, synchronous, 0, OpenExisting);
87}
88
89void LocalFileSystem::requestFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, long long size, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool synchronous)
90{
91    openFileSystemHelper(context, type, callbacks, synchronous, size, CreateIfNotPresent);
92}
93
94} // namespace WebCore
95
96#endif // ENABLE(FILE_SYSTEM)
97